Intersections and Reports
Intersection that reduces crash severity and points of conflict. Known for its circular logic.
What is Roundabout?
Regulatory Signs
What is white?
A qualitative measure describing operational conditions within a traffic stream, based on service measures such as speed and travel time, freedom to maneuver, traffic interruptions, comfort, and convenience.
What is Level of Service ?
AADT
What is Average Annual Daily Traffic?
Phasing consists of providing a separate phase for left-turning traffic and allowing left turns to be made only on a green left arrow signal indication.
What is Protected Only?
A 20-year planning horizon vision document that reflects the application of programmatic transportation goals to project prioritization.
What is an Long Range Transportation Plan?
Temporary Traffic Control Signs
What is Orange?
The time a transit unit (vehicle or train) spends at a station or a stop, measured from stopping to starting.
What is Dwell time ?
MUTCD
What is manual of uniform traffic control devices?
Interval to allow time for vehicles that entered the intersection to clear the intersection prior to the next phase.
What is Red Clearance.
An in-depth analysis
of a proposed development, one that
integrates the building, site circulation,
parking and access to the public
roadway system.
What is Traffic Impact Study?
Guide Signs
What is Green?
The average speed of passenger cars over a basic freeway or multilane highway segment under conditions of low volume.
What is a Free-flow speed?
FYA
What is a flashing yellow arrow?
What is the standard walking speed for which signalized intersections are designed for pedestrians?
3.5 ft/s
Modified roundabout for accommodation strange approach geometry. Helps prevents jams.
What is peanut roundabout?
Recreational Signs
What is Brown?
The visibility distance required for drivers to execute safe passing maneuvers in the opposing traffic lane of a two-lane, two-way highway.
What is Passing sight distance?
TIP
What is Transportation Improvement Program ?
A type of actuated operation for a given phase where the phase terminates due to a lack of vehicle calls within a specific period of time (passage time).
what is Gap Out.
Intersections that re-routs left-turn and through vehicles from the side road to turn right and then make a U-turn at a designated median opening.
What is Restricted Crossing U-turn?
Fluorescent
Pink Signs
What is Incident Management?
The density at which congestion stops all movement of persons or vehicles, usually expressed as vehicles per kilometer per lane or pedestrians per square meter.
What is Jam Density ?
TSMO
What is transportation system management and operations?
The transfer of normal operation of a traffic control signal to a special control mode of operation such as trains and emergency vehicles.
What is preemption?